avcodec: Add output_picture_number to AVCodecParserContext

Set output_picture_number in H.264 parser.
Signed-off-by: Diego Biurrun <diego@biurrun.de>

doc/APIchanges

@@ -13,6 +13,9 @@ libavutil:     2012-10-22
 
 API changes, most recent first:
 
+2013-08-xx - xxxxxxx - lavc 55.11.0 - avcodec.h
+  Add output_picture_number to AVCodecParserContext.
+
 2013-06-xx - xxxxxxx - lavc 55.10.0 - avcodec.h
   Add MPEG-2 AAC profiles
 

libavcodec/avcodec.h

@@ -3563,6 +3563,14 @@ typedef struct AVCodecParserContext {
      * AV_PICTURE_STRUCTURE_TOP_FIELD.
      */
     enum AVPictureStructure picture_structure;
+
+    /**
+     * Picture number incremented in presentation or output order.
+     * This field may be reinitialized at the first picture of a new sequence.
+     *
+     * For example, this corresponds to H.264 PicOrderCnt.
+     */
+    int output_picture_number;
 } AVCodecParserContext;
 
 typedef struct AVCodecParser {

libavcodec/h264.c

@@ -2717,8 +2717,7 @@ int ff_init_poc(H264Context *h, int pic_field_poc[2], int *pic_poc)
         pic_field_poc[0] = field_poc[0];
     if (h->picture_structure != PICT_TOP_FIELD)
         pic_field_poc[1] = field_poc[1];
-    if (pic_poc)
-        *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]);
+    *pic_poc = FFMIN(pic_field_poc[0], pic_field_poc[1]);
 
     return 0;
 }

libavcodec/h264_parser.c

@@ -240,7 +240,7 @@ static inline int parse_nal_units(AVCodecParserContext *s,
                     h->delta_poc[1] = get_se_golomb(&h->gb);
             }
 
-            ff_init_poc(h, field_poc, NULL);
+            ff_init_poc(h, field_poc, &s->output_picture_number);
 
             if (h->sps.pic_struct_present_flag) {
                 switch (h->sei_pic_struct) {

libavcodec/version.h

@@ -27,7 +27,7 @@
  */
 
 #define LIBAVCODEC_VERSION_MAJOR 55
-#define LIBAVCODEC_VERSION_MINOR 10
+#define LIBAVCODEC_VERSION_MINOR 11
 #define LIBAVCODEC_VERSION_MICRO  0
 
 #define LIBAVCODEC_VERSION_INT  AV_VERSION_INT(LIBAVCODEC_VERSION_MAJOR, \